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<?php $strResource = 'abcdefghijklmnopqrstuvwxyz'; $str = "CharzE"; $strAnswer = ''; $strLow = strtolower($str); for ($i = 0; $i < strlen($str); $i++) { $counter = substr_count($strLow, strtolower($str[$i])); $temp = ($counter * stripos($strResource, $str[$i]) + 1) % 26; if (ctype_upper($str[$i])) $strAnswer .= strtoupper($strResource[$temp]); else $strAnswer .= $strResource[$temp]; } echo $strAnswer;
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